<!DOCTYPE html>
<html>
  <head>
    <title>Figure 5.1 example</title>
    <meta charset="utf-8">
    <script type="text/javascript" src="../scripts/assert.js"></script>
    <link href="../styles/assert.css" rel="stylesheet" type="text/css">
    <style>
      div.ninja a span { background-color: yellow; }
    </style>
  </head>
  <body>

    <div></div>
    <div class="ninja">
      <span>Please </span><a href="/ninja"><span>Click me!</span></a>
    </div>

  </body>
</html>
